Present and future plans for MoinMoin
Present
1.9.x is the current stable release series - we'll fix bugs and security issues there now and also for quite a while in the future. This is what you should use when running a production wiki.
Don't expect exciting new features in 1.9.x - stable also means that there does not change much.
moin 1.8.x is "old-stable" and unsupported (there is a final 1.8.9 release, but there won't be any maintenance after 1.8.9 is out now).
Note: Upgrading from 1.8 to 1.9 is rather easy on the moin part, but might need a bit of reconfiguration of your web server as you must use WSGI to talk to moin 1.9 (you can also use a different serving method, but in that case you need some middleware like flup). Also, if you use 3rd party plugins, they might need upgrading / code changes also due to the werkzeug/wsgi related changes in moin.
Anything older than 1.9.x is considered unsupported (by MoinMoin developers) and you should urgently think about upgrading except if you get security / bug fix support from someone else or it is not an issue for you.
Near Future
MoinMoin2.0 will be the bright future (see the linked wiki page for more details).
Currently, moin2 has to be considered unstable and not ready for production. BUT, it is ready for hacking on it!
So, if you are a developer or poweruser, play with it, develop for it, help us fixing bugs and making it much better than it ever was before!
It is hard to tell a release date for it, but our goal is to have something in late 2012.
Future
After moin 2.0 will be good enough to release it with a basic feature set, we'll work on 2.0.x:
- bug fixes
- more translations
- improving existing basic features
Later, moin 2.1 with:
- more advanced features
At some time (moin 3?), we'll need to port moin to Python 3.x:
- We will have to wait until all our dependencies are available and work well for Python 3.
- We will likely want to wait until moin 2.x is stable and powerful enough so we can stop supporting moin 1.9.
- We want to avoid supporting Python 2 and 3 at the same time to save developer time for more important work, so Python 3.x should be widely deployed and used.